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#!/usr/bin/env python3
#
# Copyright (C) 2019-2023 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
from copy import deepcopy
import vyos.defaults
import vyos.certbot_util
from vyos.config import Config
from vyos.configverify import verify_vrf
from vyos import ConfigError
from vyos.util import call
from vyos.util import dict_search
from vyos.template import render
from vyos import airbag
airbag.enable()
config_file = '/etc/nginx/sites-available/default'
systemd_override = r'/etc/systemd/system/nginx.service.d/override.conf'
certbot_dir = vyos.defaults.directories['certbot']
# https config needs to coordinate several subsystems: api, certbot,
# self-signed certificate, as well as the virtual hosts defined within the
# https config definition itself. Consequently, one needs a general dict,
# encompassing the https and other configs, and a list of such virtual hosts
# (server blocks in nginx terminology) to pass to the jinja2 template.
default_server_block = {
'id' : '',
'address' : '*',
'port' : '443',
'name' : ['_'],
'api' : {},
'vyos_cert' : {},
'certbot' : False
}
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
if not conf.exists('service https'):
return None
server_block_list = []
https_dict = conf.get_config_dict('service https', get_first_key=True)
# organize by vhosts
vhost_dict = https_dict.get('virtual-host', {})
if not vhost_dict:
# no specified virtual hosts (server blocks); use default
server_block_list.append(default_server_block)
else:
for vhost in list(vhost_dict):
server_block = deepcopy(default_server_block)
server_block['id'] = vhost
data = vhost_dict.get(vhost, {})
server_block['address'] = data.get('listen-address', '*')
server_block['port'] = data.get('listen-port', '443')
name = data.get('server-name', ['_'])
server_block['name'] = name
server_block_list.append(server_block)
# get certificate data
cert_dict = https_dict.get('certificates', {})
# self-signed certificate
vyos_cert_data = {}
if 'system-generated-certificate' in list(cert_dict):
vyos_cert_data = vyos.defaults.vyos_cert_data
if vyos_cert_data:
for block in server_block_list:
block['vyos_cert'] = vyos_cert_data
# letsencrypt certificate using certbot
certbot = False
cert_domains = cert_dict.get('certbot', {}).get('domain-name', [])
if cert_domains:
certbot = True
for domain in cert_domains:
sub_list = vyos.certbot_util.choose_server_block(server_block_list,
domain)
if sub_list:
for sb in sub_list:
sb['certbot'] = True
sb['certbot_dir'] = certbot_dir
# certbot organizes certificates by first domain
sb['certbot_domain_dir'] = cert_domains[0]
# get api data
api_set = False
api_data = {}
if 'api' in list(https_dict):
api_set = True
api_data = vyos.defaults.api_data
api_settings = https_dict.get('api', {})
if api_settings:
port = api_settings.get('port', '')
if port:
api_data['port'] = port
vhosts = https_dict.get('api-restrict', {}).get('virtual-host', [])
if vhosts:
api_data['vhost'] = vhosts[:]
if 'socket' in list(api_settings):
api_data['socket'] = True
if api_data:
vhost_list = api_data.get('vhost', [])
if not vhost_list:
for block in server_block_list:
block['api'] = api_data
else:
for block in server_block_list:
if block['id'] in vhost_list:
block['api'] = api_data
# return dict for use in template
https = {'server_block_list' : server_block_list,
'api_set': api_set,
'certbot': certbot}
vrf_path = ['service', 'https', 'vrf']
if conf.exists(vrf_path):
https['vrf'] = conf.return_value(vrf_path)
return https
def verify(https):
if https is None:
return None
if https['certbot']:
for sb in https['server_block_list']:
if sb['certbot']:
return None
raise ConfigError("At least one 'virtual-host <id> server-name' "
"matching the 'certbot domain-name' is required.")
verify_vrf(https)
# Verify API server settings, if present
if 'api' in https:
keys = dict_search('api.keys.id', https)
gql_auth_type = dict_search('api.graphql.authentication.type', https)
# If "api graphql" is not defined and `gql_auth_type` is None,
# there's certainly no JWT auth option, and keys are required
jwt_auth = (gql_auth_type == "token")
# Check for incomplete key configurations in every case
valid_keys_exist = False
if keys:
for k in keys:
if 'key' not in keys[k]:
raise ConfigError(f'Missing HTTPS API key string for key id "{k}"')
else:
valid_keys_exist = True
# If only key-based methods are enabled,
# fail the commit if no valid key configurations are found
if (not valid_keys_exist) and (not jwt_auth):
raise ConfigError('At least one HTTPS API key is required unless GraphQL token authentication is enabled')
return None
def generate(https):
if https is None:
return None
if 'server_block_list' not in https or not https['server_block_list']:
https['server_block_list'] = [default_server_block]
render(config_file, 'https/nginx.default.tmpl', https)
render(systemd_override, 'https/override.conf.tmpl', https)
return None
def apply(https):
# Reload systemd manager configuration
call('systemctl daemon-reload')
if https is not None:
call('systemctl restart nginx.service')
else:
call('systemctl stop nginx.service')
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
sys.exit(1)
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